Is there a God?

All arguments against God assume the existence of God.

Obviously. How can you disprove something without first assuming that it exists? Regardless of whether you believe it does or does not, you must assume, hypothetically. that He does for the purpose of argument.

Anyway this is nonsense, there is no use in arguing against the existence of a deity as there is no conclusive proof either way. The argument would be interminable. Instead, it makes more sense to argue (as I do) against the merits of organised religion.

How do you know any of what you have written is true?

Nothing I have written is particularly controversial; or indeed false. What do you think is not true?